Prefixes That Tell When

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Across
  1. 3. in advance
  2. 5. historians consider when thinking about the future
  3. 7. to a document or speech
  4. 10. required beforehand
Down
  1. 1. your crossword puzzle with mixed clues:
  2. 2. note added after the main body of text
  3. 4. before the proper time
  4. 6. following the regular season in sports
  5. 8. for granted without proof
  6. 9. without full examination or knowledge